@OP the reason this forum exist is because people did not find a way to express their feelings at work. Currently leadership does not want to hear the truth. Now, you can dismiss these people, BUT only if company results are outstanding, we have not seen this company growing, therefore there is frustration with the way it is being led. The results are dismal.
On this statement "people that complain tend to be the worst performing" - the company is not performing the way it is being led - check the stock market results against S&P500. So you are mixing cause with effects.
Stating facts does not mean racially charged. the majority of leaders are from one country. You can pretend that you don't see it, but that is a fact.